CLI should just exit on error rather than printing steps that didn't happen

[dylanratcliffe]

If I get an error, there is a surprisingly large amount of output for an early error. For example if I force an error with a bad value for --app I see the following output:

❯ go run main.go terraform plan --app https://foo.bar.com
ERRO could not fetch instance-data                 error="Get \"https://foo.bar.com/api/public/instance-data\": dial tcp: lookup foo.bar.com: no such host"














                                                                                                                                                           ▓ Connecting to Overmind
⏳ Ensuring Token
⏳ Configuring AWS Access
⏳ Planning Changes
⏳ Processing Planned Changes
Error: failed to get instance data from app: could not fetch instance-data: Get "https://foo.bar.com/api/public/instance-data": dial tcp: lookup foo.bar.com: no such hos



  │ Fatal Error: failed to get instance data from app: could not fetch instance-
  │ data: Get "https://foo.bar.com/api/public/instance-data": dial tcp: lookup
  │ foo.bar.com: no such host

There are a number of issues here:

• There is a lot of empty space for some reason
• The "Connecting to Overmind" spinner is in a really weird spot, that isn't a bad copy-paste it actually looks like that
• We still show all the other steps e.g. ⏳ Ensuring Token despite the fact that we never execute them
• The 2nd last error (the same one as in the first line is truncated, but not the one that is wrapped) is truncated, it ends with "no such hos"
• The last error is extremely hard to read on my screen

Another similar error example is this one:

❯ go run main.go terraform plan --app https://df.overmind-demo.com
✅ Connected to Overmind
▓ Ensuring Token
⏳ Configuring AWS Access
⏳ Planning Changes
⏳ Processing Planned Changes




✅ Connected to Overmind
⛔️ Ensuring Token Error: error getting device code: oauth2: cannot fetch token: 400 Bad Request
Response: {"error":"invalid_request","error_description":"Service not found: https://api.df.overmind-demo.com"}
⏳ Configuring AWS Access
⏳ Planning Changes
⏳ Processing Planned Changes
Error: error getting device code: oauth2: cannot fetch token: 400 Bad Request
Response: {"error":"invalid_request","error_description":"Service not found: https://api.df.overmind-demo.com"}

Image:

Thie above one is better, but we still see steps executed that shouldn't be, dead whitespace, and the error being printed twice